Photo 1 of ***didn't test these alarms, but one of it has battery installed and seems like works*** Fire Alarms Smoke Detectors, Smoke Alarm Battery Operated,Fire Alarm with Test Button & Low Battery Signal, Photoelectric Technology Fire Detectors for Bedroom and Ho

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Photo 1 of ***didn't test these alarms, but one of it has battery installed and seems like works*** Fire Alarms Smoke Detectors, Smoke Alarm Battery Operated,Fire Alarm with Test Button & Low Battery Signal, Photoelectric Technology Fire Detectors for Bedroom and HoPhoto 2 of ***didn't test these alarms, but one of it has battery installed and seems like works*** Fire Alarms Smoke Detectors, Smoke Alarm Battery Operated,Fire Alarm with Test Button & Low Battery Signal, Photoelectric Technology Fire Detectors for Bedroom and HoPhoto 3 of ***didn't test these alarms, but one of it has battery installed and seems like works*** Fire Alarms Smoke Detectors, Smoke Alarm Battery Operated,Fire Alarm with Test Button & Low Battery Signal, Photoelectric Technology Fire Detectors for Bedroom and Ho